![]() ![]() Your electrician will be able to advise you on the type of fan that you require depending on which zone it is located in your bathroom. This determines which type of fan is allowed to be installed in each zone. The UK Electrical Wiring Regulations requires a readily accessible and easily operated means of isolation for the maintenance of fixed fans, it also divides the bathroom into three zones relating to their proximity to water sources. Find out more by visiting our Find an Electrician page. We strongly recommend that you use an electrician registered with one of the government-approved schemes to carry out any electrical installation work that you need. If you need any electrical work done in your home, always use a registered electrician. The resulting increase in bathroom moisture will increase dampness and may promote the growth of mould this damp and mould can then spread into adjacent rooms or through the floor to the ceiling below. A blocked or partially blocked fan will also consume more power and create more noise. A blocked fan will overheat causing the back-up thermal cut-out to operate. Despite improvements in technology, eventually even the best designed extractor fans will suffer a build-up of dust and grime that impacts on both power consumption and performance.Īfter a while the build-up of dust and grime will clog up your fan's air intake eventually causing the vents to become blocked or even stop the blades from rotating, a partially blocked fan won't be able to extract properly, resulting in moisture and dirty air circulating your bathroom. However, in doing so they are constantly subjected to contact with dust, floating fibres and other airborne pollution such as insects and hair. If enough ventilation isn't provided, the fans can cause a backdraft in your furnace, water heater or gas-fired dryer, pulling combustion products such as carbon monoxide into your living space.Bathroom extractor fans are designed to extract moisture and other dirty air from your bathroom. Open windows throughout the house to prevent a powerful and concentrated suction in one location. If you switch between air conditioning and cooling with a whole house fan as the summer weather changes, build a tightly sealed, hinged door for the fan opening that is easy to open and close when switching cooling methods.īe cautious when operating these large exhaust fans. If your fan doesn't come with a tight-sealing winter cover, you should either buy one or build one. More vent area is better for optimal whole house fan performance. The net free area of a vent takes into account the resistance offered by its louvers and insect screens. ![]() ![]() You'll need 2 to 4 times the normal area of attic vents, or about one square foot of net free area for every 750 cubic feet per minute of fan capacity. An experienced professional should take your attic measurements and install your dedicated circuit wiring and, if needed, your new attic vents.Īttic ventilation will usually need to be increased to exhaust the fan's air outdoors. Installing a whole house fan is tricky and should be done by a professional. ![]()
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